if youre looking to rom your d2g .. i would suggest starting with fission...
use the link below and follow the instructions to the T...
Install Instructions and Downloads | Team DeFuse
after playing with fission for a while .. you will get a better understanding on how to rom and theme your phone to the way you feel more comfortable with it .. then move onto Get~R~Done section of the forums and read re-read and re-read again all their stickies and mess around with their stuff for a while.
Also I would suggest if you havent already .. get VERY comfortable with sbf and rsdlite... cant count how many times ive had to sbf my phone back to factory state. along with the proper sbf and rsdlite 4.9 you will need the latest motorola drives that you can find on their website.
Good luck and happy romming .. if you need help.. you can always pm me and i will try and help you the best i can . Im no genius to the android system .. just a helpful newb that has spent quite a bit of time getting to know his d2g....